Broncos quarterback Case Keenum’s success in two-minute situations has reached the stage that he and teammates talk about to amuse themselves.

“He even makes jokes about it, how sometimes (regular game situations are) too easy and he overthinks it,” center Connor McGovern said on Monday. “But once the pressure is on, that’s when Case really kicks it into gear and makes some great plays.”

Keenum’s highest gear of execution was required in the final two minutes of Sunday’s game against the Los Angeles Chargers.

With the Broncos trailing by two points with 1:51 remaining, Keenum completed five passes for 86 yards to set up Brandon McManus’ 34-yard field goal as time expired for a 23-22 upset win.

“I think he likes the challenge of bringing our team back,” Broncos coach Vance Joseph said Monday. “He’s always been that way, from college to his NFL career.”

During the two-minute drill, Keenum has a sense of urgency because he needs to. Only so many seconds remain. But he has a sense of calm in the huddle because he needs to. A hyper passer is usually an inaccurate passer.

“That’s very important,” said Devontae Booker, the regular running back in the two-minute offense. “For him to have that urgency but remain calm is impressive.”

Said McGovern: “He’s extremely calm and that makes the rest of us calm. I think Case performs his best when there’s chaos.”

Stealing McGovern’s adjective, maybe the Broncos have a Captain Chaos in Keenum. Four games display why the Broncos feel comfortable with Keenum in crunch time.

Week 2 vs. Oakland: The Broncos trailed 19-10 entering the fourth quarter. Keenum went 3 of 5 for 39 yards (and a one-yard touchdown run) to make it a two-point game. And in the final two minutes, he went 4 of 8 for 65 yards to set up McManus’ winning field goal.

Week 9 vs. Houston: The Broncos trailed 19-17 with 3:29 remaining. Keenum went 6 of 10 for 61 yards to set up McManus, who missed a field goal as time expired.

Sunday at the Chargers: Darts to Emmanuel Sanders (38 yards to the Chargers’ 49) and Courtland Sutton (30 yards to the Chargers’ 16) stood out. Keenum’s only incompletion on the final drive was a spike.

The challenges in the two-minute drill are many: Getting teammates lined up for the play being called, making sure penalties like illegal formation and false start are avoided, staying away from the back-breaking play like a sack and delivering on-target passes that allow receivers to gain yards after the catch.

“That’s what makes Case who he is,” McGovern said. “It’s what all the great quarterbacks have. You can’t play that position and panic or be out of sorts.”

So why the success in the two-minute drill?

“Why you see offenses drive the ball quicker in the two-minute is because it’s a cleaner look from defenses — four-man rush, single-high (safety) or shell (coverage),” Joseph said.

Joseph wouldn’t bite when asked if the Broncos are inclined to use an up-tempo offense before the fourth quarter. They have sprinkled some of it into the plan but mostly out of necessity.

The plus to running the no-huddle pre-fourth quarter is the Broncos could force the defense to keep the same personnel on the field. The negative is a quick three-and-out sends the Broncos’ defense back on the field.

“Tempo is not always good,” McGovern said. “It’s more important to have the right play than to be at tempo. That won’t work against NFL defenses.”

At the very least, the Broncos will continue to practice their two-minute offense each Friday and Keenum will remain ready to lead it.

“He’s been a gamer and played his best football in the critical moments,” Joseph said. “Our team expects that out of Case and he’s been good at it.”